With ''manual focus'' lenses without hard stops (like the Sigma Art 18-35/50-100), you don't have to recalibrate the lens every time you're using it (only if you swapped the lens and recalibrated the motor). Once you've calibrated the lens, the follow-focus has learned the focus throw of the lens, so even if the gear has shifted, all you have to do is to move the focus wheel through its whole range (hit one end, then go the other side and hit the other end), and the focus range will be back into place (because every time the focus ''ring'' is gone out of range, the true mechanical focusing system is still at one end of its range, regardless of how far you turned it). So as soon as you will start turning the wheel in the opposite direction and hit the other end of the range, it will put the focus range back into place. It would not work with fly-by-wire lenses (only manual lenses, regardless if it has hard stops or not).
Best way to calibrate a photo lens with infinity focus rotation is to hold the focus ring when calibrating reach the desired end point then hold again when reach the other end point. Basically you are creating your own hard stop. Good video 🙂👍
Yup just picked up mine today and got it used here in Japan. Only $250 and it’s a A rated used lens. FYI, this lens is discontinued so get it while you can. The hard stop feature alone is worth it.
Hey ! Great video! I was just about to purchase the sigma 18-35 but you just convinced me to try the 17-50. Will let you know what I think after i use it on my BMPCC 6K. Cheers
I believe you are misunderstanding the crop factor of your lens. The 17-50 is a Sigma DC lens which means it is designed for apsc sensors and does not crop. The bmpcc 6k's sensor is only slightly smaller, maybe introducing a very slight crop. You are not receiving the the same crop factor as if you were to put canon L series glass designed for full frame cameras. Still a good lens though. Also the smaller sensors are not "cropped" but crop the image by not providing enough surface area for a full frame image circle, this is why the smaller image circle provided by the Sigma DC lenses prevents any crop form happening.
Powell explained the concept well. Yes a aps-c lens isn’t technically being cropped, but the math is all the same if your reference point for field of view is based on full frame, then regardless of whether a lens is technically being cropped or not, the crop factor math will get you to what you need to know to understand how wide/tight the lens focal length will be compared to those numbers on a full frame camera.
@@powellfilmmaking another very interesting one could be Tamron SP 24-70mm Di VC USD Canon Mount, Image stabilization, VC (Vibration Compensation) is another lens that is not spoken.
How come you never talk about image performance of the lens on pocket 6k at all which I think would be more useful rather than yapping about the horrid focus system again and again.
Hi! Great! I have the Sigma 18-35 1.8. But I would buy the 17-50 just for the optical stabilization. It will improve the stabilization on my blackmagic? Or it's just a tiny difference? Thanks!
@@maxgiaco It does help a little, but it's not worth the decrease of image quality in my opinion. One lens I did recently pick up that is stabilized and works awesome, is the Sigma Art 24-70 F2.8. It's a beast and pairs well with the 18-35
@@powellfilmmaking yee! That's awesome. In my black magic with a speedbooster of just 0.71x that lens doesn't seems to be a good focal range but pair with the Sigma 18-35 is a very good option! I little bit expensive too😅
i think you make a mistake with the cropfactor ...the Sigma 17-50mm is an APS-C Lens, so there is no Cropfactor on the BMPCC6K because the BMPCC6K has also almost an APS-C sensor size. or I am Wrong ???
You’re right, just wording what I said differently basically! It is a cropped lens and it’s only designed for crop sensor cameras, and yes it is perfect for bmpcc 6k because of the BMPCC 6k’s 1.5 crop
@@JonasZelinkaFilmproduktion Not exactly, 24 mm on this camera would look about the same as a 38 mm long lens would look on a full frame camera. And thanks! Sorry for the confusion and I hope I helped at least some 😅
So it’s a lens gear ring by a brand called wide open camera but it was kinda pricey. You can buy seamless gear rings from tilta for only 2 or 3 bucks so that’s what I did with my other lens!
@@dvsvamsi2421 I did not get one for the 17-50 so you will have to figure out the diameter of the focus ring and then look up the ring that fits that size!
@@powellfilmmaking 18-35 has no IS I think this is the biggest advantage and wider focal length is also helpful. Is 18-35 is better in overall image quality? Can you see the difference when both cameras at 2.8 at same focal length?
Man I wish this existed before I bought my 18-35. Now that I've had it for sometime, I find myself needing those additional 15mm of zoom range. By chance is the lens parfocal?
@@powellfilmmaking A parfocal lens would be a lens that maintains focus when zooming in and out. You'll notice on your 18-35 if you focus on something at the 18mm range, when zooming towards 35mm that same subject will no longer be in focus.
I wanted to know how good the lens is I want to know if the pictures come out tack sharp cause my kit lens are nice but I wanted a better lens so please let me how good it is please
I’m sorry about that! I should have added some b-roll clips in there. As a real life example here’s a video I shot entirely on the BMPCC6K and the Sigma 17-50: ua-cam.com/video/8z2UHo0xdFI/v-deo.html
@@powellfilmmaking Thank you sooooooo much ❤ And please just one more question . I will create my own company of production films. I want to start with the Rokinon lens cin . . But I didn't know what i have choose as a zoom lens. What do you think about that please did 18-35 and 50-100 is enough or what ?
With ''manual focus'' lenses without hard stops (like the Sigma Art 18-35/50-100), you don't have to recalibrate the lens every time you're using it (only if you swapped the lens and recalibrated the motor). Once you've calibrated the lens, the follow-focus has learned the focus throw of the lens, so even if the gear has shifted, all you have to do is to move the focus wheel through its whole range (hit one end, then go the other side and hit the other end), and the focus range will be back into place (because every time the focus ''ring'' is gone out of range, the true mechanical focusing system is still at one end of its range, regardless of how far you turned it). So as soon as you will start turning the wheel in the opposite direction and hit the other end of the range, it will put the focus range back into place. It would not work with fly-by-wire lenses (only manual lenses, regardless if it has hard stops or not).
Yes I recently found that out! Definitely a lot easier than I originally thought.
Best way to calibrate a photo lens with infinity focus rotation is to hold the focus ring when calibrating reach the desired end point then hold again when reach the other end point. Basically you are creating your own hard stop. Good video 🙂👍
Yep, I’ve definitely used this trick before!
Yup just picked up mine today and got it used here in Japan. Only $250 and it’s a A rated used lens. FYI, this lens is discontinued so get it while you can. The hard stop feature alone is worth it.
Great video man! Just picked up my pocket 6K pro. I watched your other video on rig and it was really helpful. Thanks
Appreciate the feedback!
@@powellfilmmaking did you try the Ursa 12K? I love shooting with it and the colors are amazing but it’s a pain to use if you’re gonna use premier pro
@@lynx1916 No lol I have never really cared to shoot in that high of resolution!
@@powellfilmmaking oh lol it’s one of my favorite cameras but it’s size it’s the only compromise for me so the pocket 6Ks are still my best choice
@@lynx1916 I gotcha! That’s awesome. Yeah I think it’s cool how the pocket 6K stacks up against Blackmagic Design’s higher end cameras
Hey ! Great video! I was just about to purchase the sigma 18-35 but you just convinced me to try the 17-50.
Will let you know what I think after i use it on my BMPCC 6K.
Cheers
Thanks! I do use the sigma 18-35 and I will say it's a LOT better than the 17-50. But the 17-50 is still a great option!
I have another video about my 5 favorite accessories for the BMPCC 6k, I talk about the 18-35 there if you want to learn more about both 🤷🏻♂️
Hello ! Thanks for the vid. Also can you please tell what model you have as an adapter ? Viltrox M2 II ?
Thanks
You’re welcome! I use the BMPCC 6k, the camera itself has an EF mount so I don’t use an adapter!
I believe you are misunderstanding the crop factor of your lens. The 17-50 is a Sigma DC lens which means it is designed for apsc sensors and does not crop. The bmpcc 6k's sensor is only slightly smaller, maybe introducing a very slight crop. You are not receiving the the same crop factor as if you were to put canon L series glass designed for full frame cameras. Still a good lens though. Also the smaller sensors are not "cropped" but crop the image by not providing enough surface area for a full frame image circle, this is why the smaller image circle provided by the Sigma DC lenses prevents any crop form happening.
No, didn’t misunderstand, just didn’t know how to explain it that good! 😂
Powell explained the concept well. Yes a aps-c lens isn’t technically being cropped, but the math is all the same if your reference point for field of view is based on full frame, then regardless of whether a lens is technically being cropped or not, the crop factor math will get you to what you need to know to understand how wide/tight the lens focal length will be compared to those numbers on a full frame camera.
I have same lens and expecting my pocket 6k. Can I see some footage from this lens and the 6k on your channel? Cheers!!!!
That is awesome! Check out my latest upload on my channel from today. It was filmed entirely on that lens with the BMPCC6K!
@@powellfilmmaking Thank you. Subbed!!
@@OvicomStudios Appreciate it man! Glad you like my work 🙌🏼
Thank you for this video, I ask you if they would give you a choice between sigma 18-35mm F / 1.8 which one you would choose
Oscar Morales For versatility, the 17-50, but I am planning on getting the 18-35 because of it’s low light capability!
@@powellfilmmaking does the image stabilizer work fine?
Oscar Morales Yes, but there isn’t any in body stabilization in the BMPCC. Still, it is nice little touch to help out.
@@powellfilmmaking another very interesting one could be Tamron SP 24-70mm Di VC USD Canon Mount, Image stabilization, VC (Vibration Compensation) is another lens that is not spoken.
@@oscarmoralesfilm Yes! I’ve considered that lens. However it is designed for full frame so it’s a little tight for me
How come you never talk about image performance of the lens on pocket 6k at all which I think would be more useful rather than yapping about the horrid focus system again and again.
Hey Powell. Could you show us a video on your bmpcc 6K on a glide cam (no vest)? I have trouble balancing it
I can’t guarantee I can but there are plenty of tutorials out there showing how!
Hi! Great! I have the Sigma 18-35 1.8. But I would buy the 17-50 just for the optical stabilization. It will improve the stabilization on my blackmagic? Or it's just a tiny difference?
Thanks!
The 18-35 is a big upgrade from the 17-50! It's not a big difference. Now that I have the 18-35 my 17-50 is collecting dust.
@@powellfilmmaking ohh. And the optical stabilization doesn't help?? Because I want a lense that can help me a bit with the little jitters
@@maxgiaco It does help a little, but it's not worth the decrease of image quality in my opinion. One lens I did recently pick up that is stabilized and works awesome, is the Sigma Art 24-70 F2.8. It's a beast and pairs well with the 18-35
@@powellfilmmaking yee! That's awesome. In my black magic with a speedbooster of just 0.71x that lens doesn't seems to be a good focal range but pair with the Sigma 18-35 is a very good option! I little bit expensive too😅
I'm thinking now on something like LUMIX 12-35mm f2.8. I saw that has great image stabilization. And the image quality is beautiful
i think you make a mistake with the cropfactor ...the Sigma 17-50mm is an APS-C Lens, so there is no Cropfactor on the BMPCC6K because the BMPCC6K has also almost an APS-C sensor size.
or I am Wrong ???
You’re right, just wording what I said differently basically! It is a cropped lens and it’s only designed for crop sensor cameras, and yes it is perfect for bmpcc 6k because of the BMPCC 6k’s 1.5 crop
@@powellfilmmaking Okey.. Maybe I heart something wrong.. So that means 24mm are 24mm on this camera becouse the lens is build for this sensor size
@@powellfilmmaking PS.. Good videos I'm a big fan!! :)
@@JonasZelinkaFilmproduktion Not exactly, 24 mm on this camera would look about the same as a 38 mm long lens would look on a full frame camera. And thanks! Sorry for the confusion and I hope I helped at least some 😅
I gotta good deal on this lens, I'm gonna get it!
For the 17 -50 which focus gear are u using plz tell
So it’s a lens gear ring by a brand called wide open camera but it was kinda pricey. You can buy seamless gear rings from tilta for only 2 or 3 bucks so that’s what I did with my other lens!
@@powellfilmmaking on tiltas website they doesn't put 17 to 55 focus ring so which diameter ring did you got
@@dvsvamsi2421 I did not get one for the 17-50 so you will have to figure out the diameter of the focus ring and then look up the ring that fits that size!
Awesome lens review! I also wonder why no one praises this lens!
The 18-35 is better, but this one isn’t bad for the price!
@@powellfilmmaking 18-35 has no IS I think this is the biggest advantage and wider focal length is also helpful.
Is 18-35 is better in overall image quality? Can you see the difference when both cameras at 2.8 at same focal length?
@@akmalsalikhov3732 Yes there is a big image quality difference! The 18-35 is an ART lens meaning it is made with higher end glass and it shows!
I have this lens. The focus throw on this lens is super short. Very hard to keep focus because of that.
Man I wish this existed before I bought my 18-35. Now that I've had it for sometime, I find myself needing those additional 15mm of zoom range. By chance is the lens parfocal?
I have upgraded to the 18-35 since this video but also miss that extra focal length! I do not know what parfocal means?
@@powellfilmmaking A parfocal lens would be a lens that maintains focus when zooming in and out. You'll notice on your 18-35 if you focus on something at the 18mm range, when zooming towards 35mm that same subject will no longer be in focus.
@@mdp4196 Oh right! I don’t think the 17-50 is
I wouldn’t be so hard on yourself. The 18-35 is superior in many ways.
So, no footage?
of course no footage. what did you expect from a wannabe "fIlMaKeR" who doesnt shoot for a living?
great stuff, is this parfocal?
I don’t think it is
Employees!!!!
I wonder how good IS (OS) is in this lens. I got Sigma 18-35, but shooting hand held is kinda annoying.
Yeah, it’s not anything crazy but I definitely notice that shooting with the 18-35 turns out a little shakier most of the time.
the OS is great
Have any sample footage you shot with this?
Check out the video on this channel with my Nissan Xterra off road, it was shot on this lens
I wanted to know how good the lens is I want to know if the pictures come out tack sharp cause my kit lens are nice but I wanted a better lens so please let me how good it is please
Hey! Coming from the kit lens, this thing is a great upgrade. Image quality is much sharper than the kit lens!
well damn.... here i thought i should sell mine and get the sigma 16-35mm.... i've had it since my 17-50mm since my first camera.
Hahaha yeah it’s not like the sharpest lens in the world but it’s functional 🤷🏻♂️
Dude how do you make a video and not show not one clip of footage with the lens. What’s the point of using a black magic as an example then?
I’m sorry about that! I should have added some b-roll clips in there. As a real life example here’s a video I shot entirely on the BMPCC6K and the Sigma 17-50: ua-cam.com/video/8z2UHo0xdFI/v-deo.html
@@powellfilmmaking No worries. Thanks for the response
Please please can i use sigma DG with BMPCC 6K . or i can used only sigma DC ?!
I’m not sure but you probably can, check if sigma DG lenses are compatible with a 1.5 x crop factor
@@powellfilmmaking
Thank you sooooooo much ❤
And please just one more question .
I will create my own company of production films.
I want to start with the Rokinon lens cin .
. But I didn't know what i have choose as a zoom lens.
What do you think about that please
did 18-35 and 50-100 is enough or what ?
@@lordlightdob1509 I use the sigma 18-35 and it’s awesome! But if you’re going with primes you might not need zoom lenses
@@powellfilmmaking
Oh great 🤗😍
And yes i will used primes Rokinon cin
Thank you sooooo much 🙏
I wish you the best in everything ❤❤
@@lordlightdob1509 You are welcome, thanks for the kind feedback!
Is this an EF or EFS mount lens? Did you need a converter?
EF-S, no you don’t need a converter for the pocket 6k
@@powellfilmmaking so it has a native Ef-S mount on it?
@@BorrisChan It has an EF mount, ef-s lenses fit on an ef mount!
@@powellfilmmaking oh wow! I was told you can’t put an EF-S lens on an EF camera body! That’s awesome news!
@@BorrisChan Well you can’t if it’s a full frame camera, but the actual mount it the same!
Actually footage would probably help
This was all shot on the BMPCC 6K and 17-50
ua-cam.com/video/8z2UHo0xdFI/v-deo.html
Is it parafocal